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Atomic and Condensed Matter Forum

Join in expert discussion on atomic and condensed matter. Methods for atoms, molecules, condensed matter. This includes the structure of the atom, its energy states, and its interactions.

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Why Electrons Don't Radiate in h/2π Orbits

Aug 11, 2014 · Replies 4 · Aug 13, 2014

Replies: 4

Views: 2K

Hydrogen partition function and degeneracy

Aug 4, 2014 · Replies 1 · Aug 12, 2014

Replies: 1

Views: 3K

Curie temperature, reversible process

Aug 6, 2014 · Replies 3 · Aug 12, 2014

Replies: 3

Views: 4K

Total energy of N+1 electron system compared to N

Aug 5, 2014 · Replies 5 · Aug 12, 2014

Replies: 5

Views: 2K

Random nature of multiple scattering

Aug 7, 2014 · Replies 15 · Aug 10, 2014

Replies: 15

Views: 3K

Density of States Plots - Uses & Importance

Jul 25, 2014 · Replies 6 · Aug 8, 2014

Replies: 6

Views: 4K

State of the art on H line spectra?

Aug 4, 2014 · Replies 4 · Aug 8, 2014

Replies: 4

Views: 3K

What Is the Most Current Model in Solid State Physics?

Jul 28, 2014 · Replies 4 · Aug 5, 2014

Replies: 4

Views: 2K

How Can Empty Space Comprise Most of Our Mass?

Jul 24, 2014 · Replies 22 · Aug 4, 2014

Replies: 22

Views: 6K

Determine density of states from an XPS spectrum

Aug 4, 2014 · Replies 1 · Aug 4, 2014

Replies: 1

Views: 4K

Are subatomic particles spherical?

Aug 1, 2014 · Replies 19 · Aug 3, 2014

Replies: 19

Views: 5K

Complete and incomplete mode locking. Charge density waves.

Jul 31, 2014 · Replies 1 · Aug 3, 2014

Replies: 1

Views: 2K

Internal Energy Change: Confusion Cleared Up

Aug 2, 2014 · Replies 1 · Aug 3, 2014

Replies: 1

Views: 3K

Transfer Matrix Method for 2D Ising & Other Models

Jul 31, 2014 · Replies 1 · Aug 1, 2014

Replies: 1

Views: 2K

Verifying my understanding of solar cells and semiconductors

Aug 1, 2014 · Replies 1 · Aug 1, 2014

Replies: 1

Views: 2K

A photon absorption/emission by an atom

Jul 31, 2014 · Replies 4 · Aug 1, 2014

Replies: 4

Views: 4K

Titanium Ion Charge: +2 - Explanation?

Jul 24, 2014 · Replies 4 · Jul 30, 2014

Replies: 4

Views: 3K

2D Density of States Energy Independent

Jul 16, 2014 · Replies 2 · Jul 29, 2014

Replies: 2

Views: 6K

Can anyone name this children's history of atomic science?

Jul 27, 2014 · Replies 7 · Jul 29, 2014

Replies: 7

Views: 2K

Understanding Schottky Barrier Height: Why the Energy Bands?

Jul 22, 2014 · Replies 1 · Jul 28, 2014

Replies: 1

Views: 3K

Silicon in an External E-Field

Jul 27, 2014 · Replies 1 · Jul 28, 2014

Replies: 1

Views: 2K

Silicon carbide polytypes (large unit cells)

Jul 14, 2014 · Replies 3 · Jul 26, 2014

Replies: 3

Views: 3K

Kinetic energy compared to energy making up mass

Jul 24, 2014 · Replies 3 · Jul 25, 2014

Replies: 3

Views: 2K

Energy of atomic orbitals in multielectron system

Jul 24, 2014 · Replies 2 · Jul 24, 2014

Replies: 2

Views: 3K

Laser Plasma Emission: Mechanisms Explained

Jul 18, 2014 · Replies 1 · Jul 23, 2014

Replies: 1

Views: 3K

What is the energy gap of Titanium Nitride (TiN) and is it indirect or direct?

Jul 16, 2014 · Replies 1 · Jul 23, 2014

Replies: 1

Views: 5K

Doping Defects in Semiconductors?

Jul 21, 2014 · Replies 2 · Jul 22, 2014

Replies: 2

Views: 3K

How BEC being described by the single-particle density matrix?

Jul 21, 2014 · Replies 1 · Jul 21, 2014

Replies: 1

Views: 3K

Reverse Bias in P-N Junctions: Why Don't Electrons Diffuse Back?

Jul 11, 2014 · Replies 4 · Jul 21, 2014

Replies: 4

Views: 4K

Conductor band overlap definition question

Jul 15, 2014 · Replies 2 · Jul 21, 2014

Replies: 2

Views: 5K

Aharonov Bohm Effect - Impurity Scattering and Phase Coherence

Jul 18, 2014 · Replies 1 · Jul 18, 2014

Replies: 1

Views: 3K

How does the reflectivity of silicon change with current?

Jul 16, 2014 · Replies 3 · Jul 17, 2014

Replies: 3

Views: 4K

A question on p-n junction depletion layer

Jul 16, 2014 · Replies 2 · Jul 16, 2014

Replies: 2

Views: 3K

Measuring the focal length of a deformable lens

Jul 9, 2014 · Replies 12 · Jul 14, 2014

Replies: 12

Views: 3K

Ocean water compression question

Jul 14, 2014 · Replies 2 · Jul 14, 2014

Replies: 2

Views: 2K

Physical explanation for power broadening

Jul 10, 2014 · Replies 3 · Jul 13, 2014

Replies: 3

Views: 8K

Density equations (light considered as reservioir)

Jun 18, 2014 · Replies 2 · Jul 12, 2014

Replies: 2

Views: 3K

Fermi Surface and Orthogonality Catastrophe

Jun 20, 2014 · Replies 2 · Jul 12, 2014

Replies: 2

Views: 3K

Spintronic light emitting diode

Jun 25, 2014 · Replies 8 · Jul 12, 2014

Replies: 8

Views: 4K

Laser light vs. synchrotron light in ARPES measurements

Jul 10, 2014 · Replies 4 · Jul 12, 2014

Replies: 4

Views: 4K

Why Does Rb87 Decay to Sr87, Not Rb85?

Jul 10, 2014 · Replies 3 · Jul 10, 2014

Replies: 3

Views: 4K

Proof for quantisation of electrons energy around an atom?

Jul 7, 2014 · Replies 14 · Jul 10, 2014

Replies: 14

Views: 8K

Hydrogen excitation, ionisation and photon absorption

Jul 10, 2014 · Replies 1 · Jul 10, 2014

Replies: 1

Views: 2K

Who is this "Kallen" and what does he represent, anyway?

Jul 9, 2014 · Replies 3 · Jul 10, 2014

Replies: 3

Views: 3K

Absorption cross sections of hydrogen ions

Jul 9, 2014 · Replies 5 · Jul 10, 2014

Replies: 5

Views: 4K

Why do electrons and protons have the same amount of charge?

Jul 9, 2014 · Replies 10 · Jul 9, 2014

Replies: 10

Views: 18K

Energy levels at semiconductor/liquid electrolyte interface

Jun 10, 2014 · Replies 4 · Jul 9, 2014

Replies: 4

Views: 3K

Identical atoms in the Dicke model

Jul 8, 2014 · Replies 1 · Jul 9, 2014

Replies: 1

Views: 3K

Why is Bohr's model of an atom limited to explaining only the hydrogen spectrum?

Jul 6, 2014 · Replies 9 · Jul 9, 2014

Replies: 9

Views: 4K

Calculating microscopic permittivity

Jul 1, 2014 · Replies 4 · Jul 8, 2014

Replies: 4

Views: 4K

NPT monte carlo simulation pressure calculation

Jul 6, 2014 · Replies 3 · Jul 8, 2014

Replies: 3

Views: 5K

Converting an indirect gap material to direct one

Jun 18, 2014 · Replies 2 · Jul 7, 2014

Replies: 2

Views: 3K

Spectroscopy technique for detecting water saturation front in polymer

Jun 25, 2014 · Replies 2 · Jul 7, 2014

Replies: 2

Views: 3K

Fermi energy and Fermi momentum from first principles

Jul 5, 2014 · Replies 1 · Jul 7, 2014

Replies: 1

Views: 4K

K vector in first brillouin zone

Jun 28, 2014 · Replies 4 · Jul 6, 2014

Replies: 4

Views: 9K

How is Wavenumber related to visible lines in the Hydrogen spectrum?

Jul 3, 2014 · Replies 2 · Jul 6, 2014

Replies: 2

Views: 3K

Molecular orbitals of three or more atoms

Jul 3, 2014 · Replies 4 · Jul 4, 2014

Replies: 4

Views: 4K

Bohr's atomic model and Bohr and Rydberg equations

Jul 1, 2014 · Replies 3 · Jul 3, 2014

Replies: 3

Views: 5K

How Do Pseudocapacitors Utilize Fast Faradaic Reactions for High Capacitance?

Jun 22, 2014 · Replies 1 · Jul 1, 2014

Replies: 1

Views: 3K

Liquid - polymer equilibrium "contact" distance

Jun 21, 2014 · Replies 1 · Jul 1, 2014

Replies: 1

Views: 3K

Is is possible to find unoccupied states below fermi energy?

Jun 28, 2014 · Replies 3 · Jun 30, 2014

Replies: 3

Views: 5K

Photon Upconversion: Neodymium YAG Laser & 478nm Wavelength

Jun 27, 2014 · Replies 5 · Jun 30, 2014

Replies: 5

Views: 3K

Difference in phase convention for Wigner d-function

May 3, 2014 · Replies 2 · Jun 30, 2014

Replies: 2

Views: 3K

What is the dielectric function of PTFE (Teflon)?

Jun 15, 2014 · Replies 1 · Jun 26, 2014

Replies: 1

Views: 3K

Derjaguin Formula for Contact Angle Prediction | Explained and Illustrated

May 26, 2014 · Replies 3 · Jun 26, 2014

Replies: 3

Views: 3K

Reading Hamiltonian (.HSX) files in SIESTA

Jun 12, 2014 · Replies 1 · Jun 25, 2014

Replies: 1

Views: 4K

Short circuit current of a Schottky diode solar cell

Jun 20, 2014 · Replies 1 · Jun 25, 2014

Replies: 1

Views: 3K

A question on superconductivity

Jun 23, 2014 · Replies 4 · Jun 23, 2014

Replies: 4

Views: 3K

Band Offset Explained: What is Band Offset?

Jun 11, 2014 · Replies 2 · Jun 20, 2014

Replies: 2

Views: 3K

Softness of Transition Metals Au, Ag, and Pd

Jun 18, 2014 · Replies 7 · Jun 19, 2014

Replies: 7

Views: 5K

DOS for impurities in a dielectric

Jun 16, 2014 · Replies 4 · Jun 17, 2014

Replies: 4

Views: 3K

Calculating energy change (rydberg?)

Jun 15, 2014 · Replies 2 · Jun 15, 2014

Replies: 2

Views: 3K

Why conductors bonds in such way that leaves the valence band not full

May 28, 2014 · Replies 3 · Jun 15, 2014

Replies: 3

Views: 5K

What is the significance of crystal momentum?

Jun 14, 2014 · Replies 6 · Jun 15, 2014

Replies: 6

Views: 16K

Double Counting Correction in LDA+U: AMF vs. FLL

Jun 13, 2014 · Replies 2 · Jun 15, 2014

Replies: 2

Views: 3K

Difficulty understanding "donor" and "acceptor" energy levels.

Jun 13, 2014 · Replies 6 · Jun 15, 2014

Replies: 6

Views: 13K

Electrostatic attraction between an electron and a hole

Jun 13, 2014 · Replies 4 · Jun 14, 2014

Replies: 4

Views: 5K

How does this make mercury a liquid at STP?

Jun 14, 2014 · Replies 1 · Jun 14, 2014

Replies: 1

Views: 2K

Working of Photovoltaic Device (Solar Cell)

Jun 7, 2014 · Replies 1 · Jun 14, 2014

Replies: 1

Views: 3K

How electrons are excited in direct transitions?

Jun 12, 2014 · Replies 11 · Jun 14, 2014

Replies: 11

Views: 3K

Can subatomic particles be PROVED to exist?

Jun 13, 2014 · Replies 15 · Jun 13, 2014

Replies: 15

Views: 5K

Please, help with the experimental setup

Jun 13, 2014 · Replies 2 · Jun 13, 2014

Replies: 2

Views: 2K

Stainless steel crystal structure

Jun 12, 2014 · Replies 9 · Jun 13, 2014

Replies: 9

Views: 11K

Understand PN Junction Diode: Diffusion & Electrons

Apr 9, 2014 · Replies 4 · Jun 12, 2014

Replies: 4

Views: 4K

How to understand the negative two-photon transition strength

May 18, 2014 · Replies 3 · Jun 12, 2014

Replies: 3

Views: 3K

Can Anyone Share an Ethanol Dielectric Function with Frequency Dependence?

Jun 10, 2014 · Replies 2 · Jun 11, 2014

Replies: 2

Views: 3K

How 4 atoms with the positions (0,0,0), (0,0,a), (0,a,0), and (a,0,0)?

Jun 8, 2014 · Replies 10 · Jun 9, 2014

Replies: 10

Views: 2K

Comparison between metals and semiconductors

Jun 6, 2014 · Replies 5 · Jun 7, 2014

Replies: 5

Views: 3K

Pump probe spectroscopy as linear process away from equilibrium

Jun 4, 2014 · Replies 2 · Jun 5, 2014

Replies: 2

Views: 2K

Half-Filled Band: Explaining Zero Chemical Potential

Jan 17, 2014 · Replies 2 · May 30, 2014

Replies: 2

Views: 3K

Surface photovoltage, Space charge and Point charges

Jan 21, 2014 · Replies 1 · May 29, 2014

Replies: 1

Views: 2K

Understanding Newton's 2nd Law & Drude Assumption for Conductivity

Feb 5, 2014 · Replies 1 · May 29, 2014

Replies: 1

Views: 3K

Data for metal oxides on complex refractive index in the infrared

Feb 10, 2014 · Replies 1 · May 29, 2014

Replies: 1

Views: 3K

Spectroscopy: clarification about doppler shift

Feb 14, 2014 · Replies 1 · May 29, 2014

Replies: 1

Views: 2K

Understanding the Boltzmann Equation Derivation in Electric and Magnetic Fields

Mar 25, 2014 · Replies 1 · May 29, 2014

Replies: 1

Views: 4K

What Are the Key Techniques for Measuring Heat Capacity at Low Temperatures?

Apr 9, 2014 · Replies 1 · May 29, 2014

Replies: 1

Views: 2K

Calculating the Lattice Mismatch of GaN/Sapphire

May 27, 2014 · Replies 4 · May 28, 2014

Replies: 4

Views: 14K

Why is raman effect weaker than Rayleigh

May 27, 2014 · Replies 2 · May 28, 2014

Replies: 2

Views: 5K

Newest implementation of GW approximation needs analytic continuation?

May 9, 2014 · Replies 1 · May 27, 2014

Replies: 1

Views: 2K

X-ray applications in solid state physics

May 10, 2014 · Replies 6 · May 26, 2014

Replies: 6

Views: 3K

Atomic and Condensed Matter

Welcome to the Atomic Physics forum!

Atomic and condensed matter physics are two closely related branches of physics. Atomic physics focuses on the study of atoms, investigating their structure, behavior, and interactions with electromagnetic radiation.

It delves into phenomena such as atomic spectra, quantum states, and atomic transitions. Condensed matter physics, on the other hand, extends these principles to study the properties and behaviors of solid and liquid matter in bulk, dealing with materials like metals, semiconductors, and liquids.

This field explores concepts such as phase transitions, crystal structures, and electronic properties of condensed phases. Both atomic and condensed matter physics contribute significantly to our understanding of the fundamental properties of matter and find applications in various technological advancements and material science.

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